Published guide archive
Move through published fixes 15 at a time without losing the newest-first archive order.
DNS
Fix internal users still reaching the old private IP after cutover by checking split-horizon DNS views, internal forwarders, resolver caches, and stale private-zone records.
Fix a Return-Path still pointing to the old email provider after migration by checking envelope sender settings, custom bounce domains, relay routes, and leftover provider-specific mail paths.
Downtime
Fix traffic still routing to a maintenance site after cutover by checking fallback routes, listener rules, health-based failover, and stale maintenance backends left active in production.
Fix a scanner or multifunction device still using the old SMTP server after mail migration by checking saved relay settings, authentication, allowed sender rules, and device-side mail profiles.
Identity & Access
Fix a SAML ACS URL still pointing to the old domain after app migration by checking identity provider settings, service provider metadata, and stale single sign-on endpoints.
Hosting
Troubleshoot Fix Subdomain Showing Main Site After Cpanel Account Transfer issue in Hosting with targeted checks for logs, configuration, identity, dependencies, and rollback.
Fix outbound mail still routing through the old smarthost after migration by checking relayhost settings, authenticated relay configuration, application mail paths, and stale outbound routing.
Fix a secure email gateway still delivering to the old mail server after Microsoft 365 migration by updating the gateway handoff target, route scope, and failover settings.
Troubleshoot Fix Online Archive Not Showing After Microsoft 365 Mailbox Migration issue in Email with targeted checks for logs, configuration, identity, dependencies, and rollback.
DNS
Troubleshoot Fix Old Ip Still Hardcoded In Hosts File After Server Migration issue in DNS with targeted checks for logs, configuration, identity, dependencies, and rollback.
Fix Roundcube when sent messages stop appearing in the Sent folder after a server move by correcting special folder mapping, subscriptions, namespaces, and IMAP folder behavior.
Fix an old dual-delivery path still splitting mail after Microsoft 365 migration by checking coexistence routing, duplicate delivery logic, leftover gateways, and staged cutover cleanup.
Hosting
Fix a staging password prompt still appearing after migration by checking leftover basic auth, protected directories, reverse proxy rules, and cached browser credentials.
Hosting
Resolve cases where a transferred cPanel account starts using the wrong PHP version because per-domain settings, handlers, or PHP-FPM mappings did not carry over cleanly.
Security Recovery
Troubleshoot Fix Registrar Recovery Email Still Set To Former Vendor issue in Security Recovery with targeted checks for logs, configuration, identity, dependencies, and rollback.